TWiki is a flexible, powerful, and simple Web based collaboration platform. It is suitable for dynamic intranets and knowledge bases, and for sharing and managing documents and collaborative projects. It resembles a normal Web site, but every page can be changed from a browser. It features automatic link generation, full text search, group authorization, Web forms, reporting, change notification, file attachments, revision control of pages and attachments, a modular templating system with skins, hierarchical navigation based on the topic parenting feature, and more. Plugins can be used to enhance the program and build groupware applications.

rimric interactive offers complete intranet/Internet databasing and collaboration solutions for any sized business or project. You can maintain invoices, purchase orders, contacts, investment groups, securities, and other data sets, or establish a Wiki based on standards, all using the fastest technologies available.

Bugzero is a Web-based change management and issue tracking system used in a distributed team environment to track software bugs, hardware defects, test cases, or any other issues. It can also be used equally well as a helpdesk customer support, trouble ticketing, or email management system to collect and manage customer feedbacks, incidents, requests, and issues. It is easy to use, but still flexible and adaptive, and can be configured to fit to your organization's unique business process and workflow.

sTeam provides a technical platform which allows groups of students, lecturers, and any other groups to construct and arrange their individual and cooperative learning and working space. It consists of an object-oriented server connected to a database, and Web, Java, and other (FTP, SMTP, IRC, etc.) clients. The server is event-driven and manages all user objects as well as the communication between the connected clients. Features that were different from most other cooperation tools is the self-organisation and self-administration by the members within the virtual environment.

Plone is a content management system
that is simple to set up, maintain, and modify. It
is designed to be a corporate-ready content
management system.
It is ideal as an intranet and extranet server, as a document/Web publishing system, and as a groupware tool for collaboration between separately located entities.
It aims to be a proper content management and publishing system, sharing the same qualities as Teamsite, Livelink, and Documentum.

Silva is a CMS for organizations that manage multiple or complex Web sites. Content is stored in clean XML, independent of layout and presentation. Features include versioning, a workflow system, an integral visual editor, content reuse, sophisticated access control, multi-site management, extensive import/export facilities, fine-grained templating, and hi-res image storage and manipulation. Silva is built on top of the Zope Web application platform.

DocTaur is a Web-based searchable directory of reference manuals. You can freely download, install, and administrate it on your local Linux intranet
server. It is powered by the ht://Dig search engine and contains reference manuals for developers.

Zoe is a Web based email client with a built in SMTP and POP3 server and Google-like search functionality that lives on your desktop. It is written in Java and uses Lucene technology to provided instant searching and threading of your email messages.